2178053 has 4 divisors (see below), whose sum is σ = 2184480. Its totient is φ = 2171628.

The previous prime is 2178049. The next prime is 2178073. The reversal of 2178053 is 3508712.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2178053 - 2² = 2178049 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2178073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2675 + ... + 3392.

It is an arithmetic number, because the mean of its divisors is an integer number (546120).

2^2178053 is an apocalyptic number.

It is an amenable number.

2178053 is a deficient number, since it is larger than the sum of its proper divisors (6427).

2178053 is an equidigital number, since it uses as much as digits as its factorization.

2178053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6426.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 2178053 is about 1475.8228213441. The cubic root of 2178053 is about 129.6252124461.

The spelling of 2178053 in words is "two million, one hundred seventy-eight thousand, fifty-three".